JP2014069278A - Centerless grinder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a centerless grinder capable of setting a ratio of cutting amount on a cylindrical surface and edge surfaces of a work, without unsteadily making the grinding on the cylindrical surface when performing angular grinding.SOLUTION: A centerless grinder, configured by arranging a grinding wheel 4 and an adjustment wheel 5 on a machine base 1 in an opposing manner such that either one axle thereof is inclined at a predetermined angle to the other axle, includes: cutting direction moving means for moving a grinding wheel mounting base 2 in a cutting direction of a work W with respect to the machine base 1; laterally moving means for moving the grinding wheel mounting base 2 in a lateral direction with respect to the machine base 1; and cutting angle control means for operating two movement means together and adjusting a movement amount of a grinding stone 11 in the cutting direction and the lateral direction with respect to the work W to set a ratio of a cutting amount on a cylindrical surface and edge surfaces of the work, controlling the cutting angle of the grinding stone 11.

Description

  The present invention relates to a centerless grinder, and more particularly, to a centerless grinder that performs angular grinding.

  As a conventional angular type centerless grinding machine, for example, a grinding wheel is provided with a conical outer peripheral surface and a conical end surface, and the buses of both are set to be orthogonal, and the orthogonal portions are the cylindrical surface and end surface of the workpiece. There has been proposed a grinding wheel that is inclined by a predetermined angle (angular angle) so as to be in contact with both of them (see, for example, Patent Document 1). In this centerless grinding machine, in the angular grinding stage, the adjusting wheel is retracted in a direction perpendicular to the workpiece axis in conjunction with the cutting operation of the grindstone on the cylindrical surface and end surface of the workpiece (workpiece). It is characterized in that the cutting amount of the workpiece end surface with respect to the cutting amount of the cylindrical surface is variable. Here, in this centerless grinder, the cylindrical surface and the end surface of the work are simultaneously ground by the conical outer peripheral surface and the conical end surface of the grinding wheel by cutting the grinding wheel into the work. In this case, the cutting direction of the grinding wheel is generally set at a right angle to the axle of the grinding wheel. For this reason, the ratio of the cutting depth between the cylindrical surface and the end surface of the workpiece to be ground is determined by the angular angle. Taking the case of a commonly used angular angle of 10 degrees as an example, this ratio is 1: tan 10 degrees, which is about 1: 0.178.

Japanese Patent No. 3635724

  However, in the conventional centerless grinding machine, the amount of cut into the cylindrical surface and end face of the workpiece is determined by the angular angle setting, but the angular angle is about 10 to 15 degrees due to the structural restrictions of the centerless grinding machine. As described above, it is difficult to take a large size, and there is a problem in that the end surface of the workpiece is smaller than the cylindrical surface.

  In centerless grinding, the end face cannot be machined unless the cylindrical surface is machined and the workpiece is rotating. Therefore, if the chamfer on the end face is larger than the amount determined by the angular angle, grinding is difficult. It was.

  However, in the prior art given in Reference 1, in the case of angular grinding, the workpiece wheel is moved backward by a certain amount at a speed slower than the cutting speed of the grindstone in conjunction with the cutting operation of the grindstone. Since the amount of cut into the surface is reduced and the ratio to the amount of cut into the end face is changed, the rotational force of the workpiece due to grinding on the cylindrical surface decreases when the retracting amount of the adjustment wheel increases. There is a problem that grinding on the cylindrical surface becomes unstable.

  Therefore, the present invention has been made paying attention to such problems, and even when angular grinding is performed in a centerless grinding machine, grinding on the cylindrical surface does not become unstable and the cylindrical surface and the end surface of the workpiece are not affected. An object of the present invention is to provide a centerless grinding machine capable of freely setting the ratio of the depth of cut.

In order to achieve the above object, a centerless grinding machine according to the present invention comprises a grinding wheel mounting base on which a grinding wheel having a grinding wheel is rotatably mounted on a machine base, and an adjusting wheel having an adjustment grinding wheel. The mounted adjustment wheel mounting base is disposed opposite the adjustment wheel or the grinding wheel so that the axle of either the adjustment wheel or the grinding wheel is inclined with respect to the other axle by a predetermined angular angle. A centerless grinding machine that grinds a cylindrical surface and an end surface of a workpiece using a cone outer peripheral surface of the grinding wheel and a conical end surface adjacent to the workpiece on the blade, the grinding wheel mounting base or the adjustment wheel mounting base A cutting direction moving means for moving at least one of the machine base in the cutting direction to the workpiece, and at least one of the grinding wheel mounting base and the adjustment car mounting base in the lateral direction with respect to the base The amount of cut to the cylindrical surface and end surface of the workpiece is adjusted by adjusting the moving direction of the grinding wheel relative to the workpiece and the amount of movement in the lateral direction by interlocking the moving means in the horizontal direction, the cutting direction moving device and the lateral direction moving device. And a cutting angle control means for controlling the cutting angle of the grinding wheel by setting the ratio.
Here, the cutting angle control means sets the cutting direction of the grindstone to a cutting angle that exceeds the angular angle with respect to the end surface of the workpiece, and cuts between the cylindrical surface and the end surface when cutting at the same angle as the angular angle. Increasing the ratio of the amount to the end face side, which can occur when the grinding wheel is formed by increasing the angular angle in accordance with the cutting angle exceeding the angular angle, the cone circumference of the grinding wheel to the cylindrical surface of the workpiece Grinding may be performed without increasing the influence of the peripheral speed difference on the surface.
In addition, the rotary wheel is mounted on the adjustment wheel on the same axis as the adjustment wheel, and the grinding wheel can be arbitrarily connected by interlocking the cutting direction moving means and the lateral direction moving means provided on the mounting base used when grinding the workpiece. You may make it truing into the shape corresponding to a certain angular angle.
In addition, the moving direction of the grinding wheel mounting base by the cutting direction moving means is perpendicular to the cutting direction of the grinding wheel mounting base by the lateral moving means, and the axle of the grinding wheel is It may be parallel to the lateral movement direction of the grinding wheel mounting base, and the axle of the adjusting wheel may form a predetermined angular angle with respect to the lateral movement direction of the grinding wheel mounting base.
In addition, the moving direction of the grinding wheel mounting base by the cutting direction moving means is perpendicular to the cutting direction of the grinding wheel mounting base by the lateral moving means, and the axle of the grinding wheel is A predetermined angular angle may be formed with respect to the lateral movement direction of the grinding wheel mounting base, and the axle of the adjustment wheel may be parallel to the lateral movement direction of the grinding wheel mounting base.
Further, the moving direction in the cutting direction of the grinding wheel mounting base by the cutting direction moving means and the moving direction in the horizontal direction of the grinding wheel mounting base by the lateral movement means form a predetermined angular angle, and The axle of the grinding wheel may be perpendicular to the cutting direction of the grinding wheel mounting base, and the axle of the adjustment wheel may be parallel to the lateral movement direction of the grinding wheel mounting base.
In the present invention, the position where the blade is provided is not particularly limited, and may be fixed on the machine base as shown in FIG. 1 to be described later, or on the adjustment vehicle mounting base side, that is, on the adjustment vehicle mounting base or FIG. As shown in the figure, it is provided on the pedestal that moves together with the adjusting wheel mounting base, and the adjusting wheel mounting base moves to the grinding wheel mounting base together with the blade, and the workpiece is pressed against the grinding wheel and ground. May be.

  As described above, according to the centerless grinding machine according to the present invention, when angular grinding is performed by interlocking the cutting direction moving means and the lateral direction moving means, the cutting direction and the lateral direction of the grinding wheel with respect to the workpiece of the grinding wheel Since the cutting angle of the grinding wheel is controlled by setting the ratio of the cutting depth to the cylindrical surface and end surface of the workpiece by adjusting the movement amount of the workpiece, grinding on the cylindrical surface is unstable even when performing angular grinding The ratio of the amount of cut with respect to the cylindrical surface and the end surface of the workpiece can be set freely.

It is a front view of the centerless grinding machine of the embodiment concerning the present invention. It is a top view of the centerless grinding machine of an embodiment. FIG. 3 is an enlarged plan view of the centerless grinder shown in FIG. 2. (A), (b) is the AA sectional view taken on the line of the grinding wheel in FIG. 3, and the BB sectional view taken on the adjustment wheel, respectively. It is the elements on larger scale of the C section in FIG. It is a simplified top view which shows an example of the truing process of the grinding stone in the centerless grinding machine of embodiment. It is a simplified top view which shows an example of the truing process of the adjustment grindstone in the centerless grinding machine of embodiment. It is a simplified top view which shows the other example of the truing process of the adjustment grindstone in the centerless grinding machine of embodiment. It is a top view which shows the other arrangement | positioning in a centerless grinder. It is a top view which shows the other arrangement | positioning in a centerless grinder. It is a front view which shows the other example in the centerless grinding machine which provided the braid | blade in the adjustment vehicle mounting base side.

  Embodiments 1 to 3 of the centerless grinding machine according to the present invention will be described below with reference to the drawings.

  As shown in FIGS. 1 and 2, the centerless grinding machine A includes a pair of grinding wheel mounting base 2 and adjustment wheel mounting base 3 provided on a machine base 1, and this grinding wheel mounting base 2 and adjustment wheel. Grinding wheel 4 and adjusting wheel 5 mounted in a state of being opposed to each of the mounting table 3, a grinding table 6 disposed between the grinding wheel 4 and the adjusting wheel 5, and a work supported by the grinding table 6 And a blade 7 on which the workpiece W is placed.

  In the present embodiment, the grinding wheel 4 and the adjustment wheel 5 are constituted by a so-called shaft-fixed grinding wheel unit. In the grinding wheel 4, as shown in FIG. 4A, a rotating cylinder 10 is fitted on the outer periphery of the grinding wheel shaft 8 via a bearing 9 such as thrust, radial, or slip, and the outer periphery of the rotating cylinder 10 is In this case, a pulley 10a for rotational movement is provided around one end, while a grinding wheel 11 around which a diamond correcting blade 11a is provided is provided at a central portion, and both end portions of the grinding wheel axle 8 are mounted on a mounting base. 2 is fixed and attached to both ends.

  As shown in FIG. 4B, the adjustment wheel 5 is also configured in the same manner as the grinding wheel 4, and the rotating cylinder 14 is disposed on the outer periphery of the adjustment wheel 12 via a bearing 13 such as last, radial, or slip. A pulley 14a for rotational movement is provided around one end of the rotating cylinder 14, and an adjusting grindstone 15 is provided around the central portion. Further, in this adjusting wheel 5, a disk-shaped rotary rotary luer 16 around which the diamond correction blade 16 a is provided is located near the other end of the rotating cylinder 14 so that there is a gap coaxially with the adjusting grindstone 15. The both ends of the adjustment axle 12 are fixedly attached to the mounting base 3 in a supported manner.

  Each of the grinding wheel mounting base 2 and the adjustment wheel mounting base 3 includes a pair of support parts 17, 17. Each of the support parts 17, 17 has a receiving side 17 a having an upward semicircle receiving part and a downward semicircle receiving part. The two ends of the grinding wheel axle 8 of the grinding wheel 4 and the axle shaft 12 of the adjustment wheel 5 are sandwiched by the semicircular receiving portions of the support portions 17 and 17 from the diameter direction. In this state, the bolts 18 are fastened and fixed in a doubly supported manner.

  Each of the grinding wheel 4 and the adjusting wheel 5 includes pulleys 10a and 14a of the rotary cylinders 10 and 14, and pulleys of motors 19 and 20 disposed on the grinding wheel mounting base 2 and the adjusting wheel mounting base 3, respectively. The motors 19 and 20 are rotated by belts 21 and 21 suspended between 19a and 20a. The grinding wheel 4 and the adjustment wheel 5 are respectively bolts of the support portions 17 and 17. By loosening (not shown) and removing the belts 21 and 21, it can be easily removed from each grinding wheel mounting base 2 and adjustment wheel mounting base 3.

  The grinding wheel mounting base 2 is configured so that the grinding wheel 4 is turned into the grinding wheel axle 8 during grinding by a drive motor 22a which is a cutting direction moving means on the grinding wheel 4 side and a screw shaft (ball screw) 23a which is rotated by the driving motor 22a. The grinding wheel 4 is attached to the grinding wheel by a drive motor 24 which is a lateral movement means on the grinding wheel 4 side and a screw shaft 25 which is rotated by the driving motor 24 while moving the workpiece W by moving in the orthogonal cutting direction. The stage 2 is configured to move parallel to the axis of the grinding wheel axle 8. In the description of the present embodiment, the cutting direction moving means and the lateral direction moving means have been described as moving means using the drive motors 22a, 24 and the screw shafts 23a, 25. However, the present invention is not limited to this, and linear motors, etc. Of course, the moving means may be used.

  On the other hand, the adjustment vehicle mounting base 3 is orthogonal to the adjustment axle 12 during grinding by a drive motor 22b which is a cutting direction moving means on the adjustment vehicle 5 side and a screw shaft 23b which is rotated by the drive motor 22b. The workpiece W is cut by moving in the cutting direction. In the example shown in FIGS. 1 to 10, a cutting direction moving means composed of a drive motor 22a and a screw shaft 23a and a lateral direction moving means composed of a drive motor 24 and a screw shaft 25 are provided on the grinding wheel 4 side. In order to explain that angular grinding is performed by interlocking the cutting direction moving means and the lateral direction moving means on the grinding wheel 4 side with a cutting angle control means (not shown), a drive motor 22b or The moving means including the screw shaft 23b and the drive motor 24a and the screw shaft 25a shown in FIGS. 6 to 8 are unnecessary and may be omitted, and the adjustment vehicle mounting base 3 may be fixed on the machine base 1.

  In the centerless grinding machine A, the workpiece W is placed on the blade 7, and the grinding wheels 4 are driven from the motors 19 and 20 of the grinding wheel mounting base 2 and the adjustment wheel mounting base 3 via the belts 21 and 21. In addition to rotating the adjusting wheel 5 and moving the grinding wheel mounting base 2 and the adjusting wheel mounting base 3 in conjunction with the cutting direction by the screw shafts 23a and 23b rotated by the drive motors 22a and 22b, The peripheral surface of the workpiece W is sharpened by the rotational grinding force of the grinding wheel 11.

  The motors 19 and 20 for rotating the grinding wheel 11 and the adjusting wheel 15 are controlled by grinding wheel rotation control means such as an NC control unit and a programmable controller (not shown), while the grinding wheel mounting base 2 and the adjusting wheel are mounted. The drive motors 22a, 22b and 24 for moving the table 3 are controlled by a cutting angle control means such as an NC control section (not shown), and the grindstone rotation control means and the cutting angle control means are controlled by one NC control section or the like. You may do it.

  Here, in the centerless grinding machine A of the present embodiment, as shown in FIGS. 2, 3, and 5, the movement direction of the grinding wheel mounting base 2 by the drive motor 22 a and the screw shaft 23 a in the cutting direction, and the drive motor 24 and the screw shaft 25 are orthogonal to the lateral movement direction of the grinding wheel mounting base 2, and the grinding wheel axle 8 of the grinding wheel 4 is parallel to the lateral movement direction of the grinding wheel mounting base 2. The adjustment axle 12 of the adjustment wheel 3 forms a predetermined angular angle α with respect to the lateral movement direction of the grinding wheel mounting base 2, that is, the direction of the grinding wheel axle 8 of the grinding wheel 4.

<Angular grinding operation>
Next, in the centerless grinding machine A of the present embodiment, when angular grinding is performed by a cutting angle control means (not shown), the driving motor 22a and the driving motor 24 are interlocked to cut the grinding wheel 11 into the workpiece W. By adjusting the amount of movement in the direction and the lateral direction, the ratio of the amount of cut with respect to the cylindrical surface W1 (see FIG. 5) and the end surface W2 (see FIG. 5) of the workpiece W is set, and the cut angle of the grinding wheel 11 is set. Control.

  At that time, in the centerless grinding machine A of the present embodiment, the cutting angle control means sets the cutting direction of the grindstone to a cutting angle larger than the angular angle α with respect to the end surface of the workpiece, and the same as the angular angle α. By increasing the ratio of the cut amount of the cylindrical surface W1 and the end surface W2 with respect to the end surface side when cutting at an angle, the angular angle α is increased in accordance with the cut angle exceeding the angular angle α, and the grinding wheel 11 is made. Grinding can be performed without increasing the influence of the peripheral speed difference between the upper end portion and the lower end portion of the conical outer peripheral surface 11a1 of the grinding wheel on the cylindrical surface W1 of the workpiece W, which can occur when forming. Thereby, in the centerless grinding machine A of the present embodiment, the cylindrical surface W1 of the workpiece W can be ground without making the grinding of the cylindrical surface W1 of the workpiece W unstable even when the angular grinding is performed.

  In the centerless grinder A, the angular angle α can usually be taken only from 10 degrees to 20 degrees due to the construction of the machine. However, like the centerless grinding machine A, the cutting direction of the grinding wheel mounting base 2 by the cutting direction moving means including the drive motor 22a and the screw shaft 23a, and the lateral direction moving means including the drive motor 24 and the screw shaft 25, etc. The direction of movement of the grinding wheel mounting base 2 in the horizontal direction is perpendicular to that of the grinding wheel, and the cutting angle control means moves in the direction of cutting by the cutting direction moving means and the direction of movement of the grinding wheel mounting base 2 in the lateral direction by the lateral movement means. In the case of performing two-axis control interlocking in both directions, the angle can be increased up to a cutting angle of 45 degrees where the ratio of the cutting amount between the cylindrical surface W1 and the end surface W2 of the workpiece W is 1: 1. By arbitrarily setting the cutting angle, the workpiece W can be formed without changing the angle formed by the conical outer peripheral surface 11a1 and the conical end surface 11a2 of the grinding wheel 11 as shown in FIG. It is possible to cut into.

  Therefore, according to the centerless grinding machine A of the present embodiment, a grindstone that forms an angle formed by the conical outer peripheral surface 11a1 and the conical end surface 11a2 of the grinding grindstone 11 that is normally required for a notch that matches the angular angle α. Molding can be eliminated. That is, even if the angular angle α increases, it is not necessary to form a grindstone to reduce the tip angle of the conical outer peripheral surface 11a1 of the grinding wheel 11, that is, the angle formed between the conical outer peripheral surface 11a1 and the conical end surface 11a2.

  Therefore, it is not necessary to form a grindstone to reduce the angle formed between the conical outer peripheral surface 11a1 and the conical end surface 11a2 of the grinding wheel 11, and therefore the upper end portion of the conical outer peripheral surface 11a1 when the grinding grindstone 11 rotates with respect to the cylindrical surface W1 of the workpiece W. And the difference in peripheral speed between the lower end portions can be prevented. As a result, if the peripheral speed difference between the upper end portion and the lower end portion of the conical outer peripheral surface 11a1 of the grinding wheel 11 becomes large, the grinding process becomes unstable and the wear of the grinding wheel becomes non-uniform, and the life between the dresses of the grinding wheel 11 is short. However, according to the centerless grinding machine A of the present embodiment, the peripheral speed difference between the upper end and the lower end of the cone outer peripheral surface 11a1 of the grinding wheel 11 with respect to the cylindrical surface W1 of the workpiece W is increased. It is possible to prevent, stabilize the grinding process, make the wear of the grinding wheel uniform, and extend the interdressing life of the grinding wheel 11.

<True processing>
Next, the truing process in the centerless grinding machine A of this embodiment will be described.

  In the centerless grinding machine A of this embodiment, the truing process for correcting the surface state and shape of the grinding wheel 11 of the grinding wheel 4 and the adjustment grinding wheel 15 of the adjustment wheel 5 is mounted on the adjustment wheel 5 on the adjustment wheel mounting base 3 side. This is done with a rotary trule 16.

  That is, in the centerless grinding machine A of the present embodiment, the rotary wheel 16 is mounted on the adjustment wheel 5 coaxially with the adjustment wheel 15, so that the grinding wheel 11 used for grinding the workpiece W is moved in the cutting direction. The grinding wheel 11 is arbitrarily angular by linking the cutting direction moving means composed of the drive motor 22a and the screw shaft 23a to be moved with the horizontal direction moving means composed of the drive motor 24 and the screw shaft 25 moved horizontally. Truing to a shape corresponding to the angle α.

  Specifically, the grinding wheel 11 is moved in the direction from the adjusting grindstone 15 to the rotary truer 16 by a lateral movement means comprising a drive motor 24 and a screw shaft 25 that are moved in the lateral direction, and the drive motor 22a and the screw shaft. The grinding wheel 11 is moved in the direction of the rotary truer 16 by the cutting direction moving means composed of 23a or the like, and the grinding wheel 11 is trued by the rotary tool 16 as shown in FIG. Arrange. The truing process (reshape) may include a dressing process (reshape).

  Therefore, in the centerless grinding machine A of the present embodiment, the cutting direction moving means including the driving motor 22a and the screw shaft 23a that move the grinding wheel 11 in the cutting direction, the driving motor 24 and the screw shaft 25 that move in the lateral direction, and the like. When the grinding wheel 11 is trued into a shape corresponding to an arbitrary angular angle α by interlocking with the lateral movement means consisting of truing at a position where the blade 7 does not interfere with the rotary truer 16 during the truing process. Processing can be performed, and truing processing is facilitated.

  In addition, as shown in FIG. 7, the dressing process of the adjusting wheel 15 in the adjusting wheel 5 includes a cutting direction moving means including a driving motor 22a and a screw shaft 23a for moving the grinding wheel 11 in the cutting direction, and a lateral movement. As shown in FIG. 7, the grinding wheel 11 is brought into contact with the adjusting wheel 15 and is adjusted by the grinding wheel 11 of the grinding wheel 4 as shown in FIG. A dressing process is performed on the grindstone 15. In addition, as shown in FIG. 7, in the aspect in which the lateral movement means by the drive motor 24 a and the screw shaft 25 a is disposed on the adjustment wheel mounting base 3 on the adjustment wheel 5 side, the grinding wheel 4 is ground. A means for dressing the grinding wheel 11 and the adjustment grindstone 15 by controlling and moving the adjustment wheel mounting base 3 with respect to the grindstone 11, and a cutting direction moving means for both the grinding wheel mounting base 2 and the adjustment wheel mounting base 3; There is also means for using a lateral movement means together.

  Further, as shown in FIG. 8, similarly to the configuration of the adjustment wheel 5, a rotary truer 16 ′ is arranged in parallel to the rotary cylinder 10 in the grinding wheel 4 in a state coaxial with the grinding wheel 11 and at a predetermined interval. The grinding wheel 4 of the grinding wheel 4 is fixed by interlocking the cutting direction moving means composed of the drive motor 22a and the screw shaft 23a with the lateral direction moving means composed of the drive motor 24 and the screw shaft 25 moved laterally. You may make it dress the adjustment grindstone 15 of the adjustment wheel 5 by moving rotary truer 16 '. This is suitable when the peripheral surface of the grinding wheel 11 is stepped or the like and it is difficult to use the grinding wheel 11 as a dresser. Further, the adjusting grindstone 15 includes a bite type dressing tool (not shown) attached to the grinding wheel side grinding wheel mounting base 2 and a cutting direction moving means comprising a drive motor 22a, a screw shaft 23a and the like, and a lateral direction. There is also a means for dressing by moving toward the adjusting grindstone 15 by interlocking with a lateral movement means comprising a drive motor 24 to be moved, a screw shaft 25, and the like.

  The grinding wheel 4 and the adjustment wheel 5 in this embodiment are so-called fixed shaft type grinding wheel units as described above, but of course the same applies to the axial rotation type grinding wheel unit.

  In the centerless grinding machine A of this embodiment, as shown in FIGS. 2, 3, and 5, the driving motor 22 a and the screw shaft 23 a move in the cutting direction of the grinding wheel mounting base 2 and the driving motor 24. And the grinding wheel axle 8 of the grinding wheel 4 is parallel to the lateral movement direction of the grinding wheel mounting base 2 and is orthogonal to the lateral movement direction of the grinding wheel mounting base 2 by the screw shaft 25. Although the adjustment axle 12 of the adjustment wheel 3 is disposed so as to form a predetermined angular angle α with respect to the lateral movement direction of the grinding wheel mounting base 2, that is, the direction of the grinding wheel axle 8 of the grinding wheel 4. In the present invention, the present invention is not limited to this, and a centerless grinding machine B shown in FIG. 9 or a centerless grinding machine C shown in FIG.

  That is, in the centerless grinding machine B shown in FIG. 9, the moving direction in the cutting direction of the grinding wheel mounting base 2 by the cutting direction moving means including the driving motor 22a and the screw shaft 23a, and the driving motor 24 and the screw shaft 25 are used. The lateral movement direction of the grinding wheel mounting base 2 by the lateral movement means is orthogonal to the lateral direction, and the grinding wheel axle 8 of the grinding wheel 4 is predetermined with respect to the lateral movement direction of the grinding wheel mounting base 2. And the adjustment axle 12 of the adjustment wheel 5 is parallel to the lateral movement direction of the grinding wheel mounting base 2, that is, perpendicular to the cutting direction of the grinding wheel mounting base 2. Arrange.

  Further, in the centerless grinding machine C shown in FIG. 10, the moving direction of the grinding wheel mounting base 2 in the cutting direction by the cutting direction moving means including the driving motor 22a and the screw shaft 23a, and the driving motor 24 and the screw shaft 25 are used. The lateral movement direction of the grinding wheel mounting base 2 by the lateral movement means forms a predetermined angular angle α, and the grinding wheel axle 8 of the grinding wheel 4 is in the cutting direction of the grinding wheel mounting base 2. In addition, the adjustment wheel 12 of the adjustment wheel 5 is arranged so as to be parallel to the lateral movement direction of the grinding wheel mounting base 2.

  In the description of the present embodiment, the blade 6 is described as being fixed on the machine base 1 via the grinding table 6 as shown in FIG. 1, but the present invention is not limited to this, for example, FIG. As shown in FIG. 5, the adjusting vehicle mounting base 3 or the base that moves together with the adjusting car mounting base 3 is provided via a grinding base 6, and a cutting direction moving means comprising a drive motor 22b, a screw shaft 23b, etc. The adjusting wheel mounting base 3 is moved toward the grinding wheel mounting base 2 together with the blade 6 by interlocking with a lateral movement means comprising a drive motor 24a, a screw shaft 25a and the like for moving in the direction, and the workpiece W is ground to the grinding wheel. Of course, it may be configured so as to be angularly ground by being pressed against the surface 11. In this case, as shown in FIG. 11, the drive motor 22a and the screw shaft 23a, the drive motor 24 and the screw shaft 25 may be omitted, and the grinding wheel mounting base 2 may be fixed so as not to move onto the machine base 1. However, as shown in FIGS. 1 to 10 described above, the drive motor 22a and the screw shaft 23a, and the drive motor 24 and the screw shaft 25 may be left so that they are not operated during the angular grinding.

A, B, C: Centerless grinding machine W ... Work 1 ... Machine base 2 ... Grinding wheel mounting base 3 ... Adjusting wheel mounting base 4 ... Grinding wheel 5 ... Adjusting wheel 6 ... Grinding base 7 ... Blade 8 ... Grinding wheel axle 11 ... Grinding Grinding wheel 12 ... Adjusting axle 15 ... Adjusting grinding wheel 16 ... Rotary dresser 17 ... Support 22a ... Drive motor (cutting direction moving means)
22b ... Drive motor (cutting direction moving means)
23a ... Screw shaft (cutting direction moving means)
23b ... Screw shaft (lateral movement means)
24 ... Drive motor (lateral movement means)
24a ... Drive motor (lateral movement means)
25 ... Screw shaft (lateral movement means)
25a ... Screw shaft (lateral movement means)

Claims (6)

A grinding wheel mounting base on which a grinding wheel having a grinding wheel is rotatably mounted on a machine base, and an adjusting wheel mounting base on which an adjusting wheel having an adjustment grinding wheel is rotatably mounted are connected to the adjustment wheel or the grinding wheel. One of the axles is disposed opposite to the other axle while being inclined by a predetermined angular angle, and the workpiece on the blade arranged between the two mounting bases is connected to the outer peripheral surface of the cone of the grinding wheel. A centerless grinding machine for grinding a cylindrical surface and an end surface of a workpiece using an adjacent conical end surface;
A cutting direction moving means for moving at least one of the grinding wheel mounting base or the adjusting wheel mounting base with respect to the machine base in the cutting direction into the workpiece;
A lateral movement means for moving at least one of the grinding wheel mounting base and the adjustment wheel mounting base in a lateral direction with respect to the machine base;
The grinding wheel is set by adjusting the cutting direction of the grinding wheel relative to the workpiece and the amount of movement in the lateral direction by linking the cutting direction moving means and the lateral direction moving means, thereby setting the ratio of the cutting amount between the cylindrical surface and the end surface of the workpiece. Cutting angle control means for controlling the cutting angle of
A centerless grinder characterized by comprising: The centerless grinding machine according to claim 1,
The cutting angle control means sets the cutting direction of the grinding wheel to a cutting angle that exceeds the angular angle with respect to the workpiece end surface, and the ratio of the cutting amount between the cylindrical surface and the end surface when cutting at the same angle as the angular angle By increasing the angle with respect to the end surface side, it is possible to increase the angular angle in accordance with the cutting angle that exceeds the angular angle, and this can occur when the grinding wheel is molded to the cylindrical surface of the workpiece. A centerless grinding machine that performs grinding without increasing the effect of speed difference. In the centerless grinding machine according to claim 1 or 2,
A rotary wheel is mounted coaxially with the adjustment wheel on the adjustment wheel, and the grinding wheel is arbitrarily angular by linking the cutting direction moving means and the lateral movement means provided on the mounting base used when grinding the workpiece. A centerless grinder characterized by truing into a shape corresponding to the angle. In the centerless grinding machine according to any one of claims 1 to 3,
The moving direction in the cutting direction of the grinding wheel mounting base by the cutting direction moving means is perpendicular to the moving direction in the horizontal direction of the grinding wheel mounting base by the horizontal moving means, and the axle of the grinding wheel is the grinding wheel. A centerless grinder characterized by being parallel to the lateral movement direction of the mounting base and having a predetermined angular angle with respect to the lateral movement direction of the grinding wheel mounting base. . In the centerless grinding machine according to any one of claims 1 to 3,
The moving direction in the cutting direction of the grinding wheel mounting base by the cutting direction moving means is perpendicular to the moving direction in the horizontal direction of the grinding wheel mounting base by the horizontal moving means, and the axle of the grinding wheel is the grinding wheel. A centerless grinding machine characterized in that it forms a predetermined angular angle with respect to the lateral movement direction of the mounting base, and the axle of the adjusting wheel is parallel to the lateral movement direction of the grinding wheel mounting base. . In the centerless grinding machine according to any one of claims 1 to 3,
The moving direction in the cutting direction of the grinding wheel mounting base by the cutting direction moving means and the moving direction in the horizontal direction of the grinding wheel mounting base by the lateral moving means form a predetermined angular angle, and the grinding wheel The centerless grinding machine is characterized in that the axle of the wheel is perpendicular to the cutting direction of the grinding wheel mounting base, and the axle of the adjusting wheel is parallel to the lateral movement direction of the grinding wheel mounting base.

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